31045

Appears in sequences

• The Wiener index of a chain of n triangles (i.e., joined like VVV..VV; here V is a triangle!).at n=34A143941
• a(n) = (9*n^4+10*n^3-3*n^2-4*n)/12.at n=14A172045
• Coefficient array for the third power of the monic integer Chebyshev polynomials 2*T(2*n,x/2) as a function of x^2.at n=38A219236
• Number of nX3 0..1 arrays with every element equal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=11A300600
• Number of nX3 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=11A301325
• Number of nX3 0..1 arrays with every element unequal to 0, 1, 3, 4 or 7 king-move adjacent elements, with upper left element zero.at n=14A304850